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DGII Series Closed Loop Hollow Rotary Actuators

AlphaStep DGII Series Hollow Rotary Actuators

AlphaStep

DGII Series Closed Loop AZ Series Absolute Encoder Hollow Rotary Actuators

The DGII Series is a line of of products that combine a high rigidity hollow rotary table with an AlphaStep absolute encoder AZ series closed loop stepper motor and driver package. It retains the ease of use of a stepper motor, while also allowing for highly accurate positioning of large inertia loads.

  • Integrated actuator and stepper motor makes design easier
  • Vertical or Horizontal Mount Motor Types
  • Easy Home Setting and Return-to-Home without need for sensors
  • Large-diameter hollow output table
  • Stepper motor provides excellent performance
    • Agile responsiveness
    • Stability at low speeds
    • Tuning-free
  • Requires AZ Series Driver (sold separately)

Mechanical Absolute Encoder

Mechanical Absolute Encoder


Rotary Actuator Lineup

Frame Size

Power Input

Options

Permissible
Torque

Permissible Speed

Permissible Moment Load

60 mm Rotary Actuators

60 mm (2.36 in.)
Vertical Motor Mount
Rotary Actuator

DC Input

-

0.9 N·m

7.9 lb-in

200 r/min

2 N·m

17.7 lb-in

85 mm Rotary Actuator

85 mm (3.35 in.)
Vertical Motor Mount
Rotary Actuator

AC Input

Electromagnetic Brake

4.5 N·m

39.8 lb-in

200 r/min

10 N·m

88 lb-in

DC Input

85 mm Rotary Actuator

85 mm (3.35 in.)
Horizontal Motor Mount
Rotary Actuator

AC Input

Electromagnetic Brake

3 ~ 9 N·m

26 ~ 79 lb-in

100 ~ 300 r/min

10 N·m

88 lb-in

DC Input

130 mm Rotary Actuator

130 mm (5.12 in.)
Vertical Motor Mount
Rotary Actuator

AC Input

Electromagnetic Brake

12 N·m

106 lb-in

200 r/min

50 N·m

440 lb-in

DC Input

130 mm Rotary Actuator

130 mm (5.12 in.)
Horizontal Motor Mount
Rotary Actuator

AC Input

Electromagnetic Brake

12 ~ 24 N·m

106 ~ 210 lb-in

100 ~ 200 r/min

50 N·m

440 lb-in

DC Input

200 mm Rotary Actuator

200 mm (7.87 in.)
Vertical Motor Mount
Rotary Actuator

AC Input

Electromagnetic Brake

50 N·m

440 lb-in

110 r/min

100 N·m

880 lb-in

Repetitive Positioning Accuracy = ±15 arcsec (±0.004°)

Lost Motion = 2 arcmin (0.033°)


 

Hollow Rotary Actuators

Hollow Rotary Actuators

High Positioning Accuracy

  • Non-Backlash
  • Repetitive Positioning Accuracy ±15 sec
  • Lost Motion 2 arc minutes

Note: The repetitive positioning accuracy is measured at a constant temperature (normal temperature) under a constant load.

Large-Diameter, Hollow Output Table Makes Simple Wiring and Piping Possible

The large diameter hollow hole (through-hole) helps reduce the complexity of wiring and piping, thus simplifying your equipment design.

Hollow Output Table

Horizontal Motor Mount Type

Cable Direction

In addition to the conventional type in which the rotary table shaft and the motor shaft were arranged in parallel (motor vertical mounting), the product lineup also includes types in which the rotary table shaft and the motor shaft are perpendicular (motor horizontal mounting).

Select the type that best suits the installation space for the equipment.

(Example: For standard type with frame size of 85 mm)

mounting options

Advantages of Motor Horizontal Mounting

  • Machining of motor clearance hole is not necessary, thereby simplifying the installation plate.
  • Improved installability due to elimination of installation pedestal.
  • Cabling and piping can be routed between legs underneath the table.

horizontal motor mounting

Contributes to Easier Equipment Design

The gear-reduction mechanism employs precision gears along with a proprietary adjustment mechanism that eliminates backlash. The repetitive positioning accuracy from a single direction is ±15 sec., while lost motion in a positioning operation from two directions is 2 arc minutes. These characteristics make the DGII series the ideal choice for applications in which accurate positioning is a must.

Rotary Actuator Features

*DGM60 features Deep-Groove Ball Bearings

High Power and Rigidity

The hollow output table is integrated with a high rigidity crossroller bearing*. The structure improves permissible thrust load and moment load while maintaining high torque.

The output table uses deep-groove ball bearings (two pieces) for the 2.36 in. (60 mm) frame size type, and a cross-roller bearing for the 3.35 in. (85 mm), 5.12 in. (130 mm) and 7.87 in. (200 mm) frame size types. As the frame size increases, the permissible moment load also increases but the displacement caused by the moment load decreases.

Direct Coupling for Higher Reliability

Equipment tables and arms can be installed directly on the output table. This saves you the hassle and cost of designing an installation mechanism, arranging necessary parts, adjusting the belt tension, etc. when mechanical parts such as belt and pulley are used for installation.

Direct Coupling


Because of Absolute System, Easy Home Setting and Return-to-Home is Possible

No Return-to-Home Sensor Required

Because it is an absolute system, no home sensor is necessary.

Reduced Costs

Sensor and wiring costs can be reduced, leading to overall lower system costs.

Not Affected by Sensor Malfunctions

There is no concern about sensor malfunction, sensor failure, or sensor wire disconnection.

Improved Return-to-Home Accuracy

Return-to-home is carried out without any concern over variation in home sensor detection, which can improve home accuracy.

*If no limit sensor is installed, driver software limits are used to prevent operation when a limit is exceeded.

Easy Home Setting

By pressing the switch on the driver surface, home position can be set simply, and the home position can be saved with the sensor. Furthermore, it is possible to set the home position using the data setting software (MEXE02) or the external input signal.

HOME Switch


High-Speed Return-to-Home

Since return-to-home is possible without the use of a home sensor, return-to-home is carried out at high speed without any concern over sensor sensitivity, which can shorten the machine cycle.

Easy Return-to-Home

Return-to-Home Not Required

The position information s retained even if the power shuts off during positioning. Furthermore, if the built-in controller type is being used, positioning is restarted without return-to-home when the power is restored after a power outage or an emergency top on the production line.

Continue after Emergency Stop


The Mechanical Sensor does not Need a Battery

Battery-Free

The sensor is mechanical, thus it doesn't require a battery. Since position information is mechanically managed by the absolute sensor, positioning information can be retained even if there is a power outage or the cable between the motor and driver is disconnected.

Reduced Maintenance

Because there is no battery that needs replacement, maintenance time and costs can be reduced.

Unlimited Driver Installation Possibilities

Because there is no need to secure space for battery replacement, there are no restrictions on the installation location of the driver, improving the flexibility and freedom of the layout design of the control box.

Safe for Long Distance Shipping

Ordinary batteries self-discharge, thus caution is required for long-term transportation, such as overseas shipping. The motor sensor is battery-free, thus there are no restrictions on the retention of positioning information. This also means that there are no concerns about shipping regulations for batteries when exporting.

Position Retention Even if the Cable Between the Motor and Driver is Disconnected

Positioning Information is retained in the motor sensor.


Useful Functions Thanks to the Built-in AZ Series

Convenient Operation & Setting

By using the AZ Series functions, the hollow rotary actuator's output table coordinates are managed and the following operations become possible.

Short-Cut Operation Reduces Takt Time

This is an operation method that drives the equipment in the rotation direction, providing the shortest distance to the target position that has been set. It can reduce the amount of takt time for the equipment.

Short-Cut Operation

Easy Control by Setting No-Entrance Areas

If there are dangerous or damaging items on the equipment, it is possible to set an area into which the output table cannot be moved.

No Entry Area

Reduced Equipment Setup Time

The parameters necessary to operate the hollow rotary actuator are set at the time of shipment, which contributes to reduce equipment setup time.

  • Home Position
  • Resolution Setting (0.01°/step)
  • Output Table Rotation Direction Setting
  • Round Setting ±180°

All of the initial settings can be changed.

Reduced Set Up Time


 

AZ Series AC Input Drivers

AlphaStep AC Input Drivers

The AlphaStep AZD (AC Input) Drivers offers superior high speed performance, high functionality and closed loop control. There are no external sensors to buy as the motor and driver complete the system. Available in many configurations and networks. Advanced operation and function control is included through our MEXE02 software (free download). The AlphaStep AZD (AC Input) Drivers can perform quick positioning operations over a short distance without the need for tuning, while providing smooth performance.

  • Built-in Protective Functions
  • Emergency Torque Off Function
  • Driver Types:
    • Pulse Input
    • Pulse Input with RS-485 Communications
    • Built-in Controller (Network)
    • EtherNet/IP™ Types
  • Single-Phase 100-120 VAC or Single-Phase/Three-Phase 200-240 VAC
  • For use with AlphaStep AZ Series Motors (AC Input)

 

AZ Series DC Input Drivers

AlphaStep DC Input Drivers

The AlphaStep AZD-K Drivers offer 24/48 VDC input voltage, high functionality and closed loop control. There are no external sensors to buy as the motor and driver complete the system. Available in many configurations and networks. Advanced operation and function control is included through our MEXE02 software (free download). The AlphaStep AZD-K (DC Input) can perform quick positioning operations over a short distance without the need for tuning, while providing smooth performance.

  • Built-in Protective Functions
  • Driver Types:
    • Pulse Input
    • Pulse Input with RS-485 Communication
    • Built-in Controller (Network) Types
    • EtherNet/IP™ Types
  • 24/48 VDC
  • For use with AlphaStep AZ Series Motors (DC Input)

 

Multi-Axis Controller / Driver (EtherCAT)

Multi-Axis Controller / Driver

A multi-axis controller that supports EtherCAT communication.Compatible with the CiA402 drive profile. It can be connected to the AZ Series DC input motors and electric actuators.

2-axis, 3-axis and 4-axis driver connections are available.

  • 24/48VDC

EtherCat

 


Cables

Cables

These cables are used to connect or extend the distance between the motor and driver.

Required (sold separately).

Use a flexible motor cable if the motor is installed on a moving part or its cable will be flexed.

 

Mounting Pedestal

Installation Pedestal

This is a useful installation pedestal that enables the DGII Series to be used as a direct drive motor. Applications that require height and installation from the side can also be performed, expanding the range of available operations.

 


System Configuration

System Configuration

System Configuration


CAD / Manual Search

To locate product CAD and Operator Manuals please search using the product Item Number.

Downloads



 

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